Two is a safety door handle designed by the Belgian design studio Pilipili for use in nursing homes. It requires an exact combination of two actions to operate it; a 'hidden' button, which is incorporated in the design, must first be pressed before the handle itself can be pushed down. Because dementia patients are unlikely to understand the double action needed to open the door, it prevents those who exhibit erratic behavior from entering or leaving a particular room. It thus reduces the task of the care staff. 'Two' can be transformed into a normal working latch without the double action, simply by pushing a peg in the internal mechanism before installation.